Which is a typical relief valve setting for a propane tank?

Which is a typical relief valve setting for a propane tank?

• A. 250 psig
• B. 300 psig
• C. 325 psig
• D. 350 psig

Answer: (B)

A relief valve on a propane tank is set to open before the pressure becomes dangerous, but high enough to avoid nuisance venting during normal temperature and fill conditions. The typical approach is to set the relief point at about 1.25 times the maximum normal working pressure for propane. Since the usual service pressure for propane tanks is around 240 psi, 1.25 times that is about 300 psi. So 300 psi is the standard, practical setting that safely covers pressure spikes without venting under normal operation. The other options would either vent too soon or allow pressures to climb too high before relief acts.

A relief valve on a propane tank is set to open before the pressure becomes dangerous, but high enough to avoid nuisance venting during normal temperature and fill conditions. The typical approach is to set the relief point at about 1.25 times the maximum normal working pressure for propane. Since the usual service pressure for propane tanks is around 240 psi, 1.25 times that is about 300 psi. So 300 psi is the standard, practical setting that safely covers pressure spikes without venting under normal operation. The other options would either vent too soon or allow pressures to climb too high before relief acts.